Practise the calculations: Work, energy and power
Exam-style practice on work, kinetic, gravitational and elastic energy, energy conservation, power, efficiency and Sankey diagrams. Work on paper first, then type your final answer (the unit is already shown) and press Check. Answers within 2 % count, and so do answers rounded to 2 significant figures. You get two tries; then a worked solution appears in the IB 5-part layout (Given → Physics → Equation → Working → Answer, with ✔ [1] mark points). ↻ New numbers gives you the same exercise again with different data. Use g = 9.81 m s⁻². Your best score stays on this device only.
Practise with the simulations first:
Printable version (PDF) — the same exercises to do on paper.
Original IB-style exercises written for this course (many adapted from our problem sets with new numbers).